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YAML↔JSON↔TOML Converter (Bidirectional, Browser-Only)

Q: "Can I keep YAML anchors / aliases?"

"They may be expanded because JSON/TOML have no equivalent. Verify the result if you rely on shared references."

Q: "Can types change (number vs string)?"

"Yes. YAML can implicitly interpret types. For example, \"01\" may become a number and yes/no/on/off can become booleans. Quote explicitly if needed."

Q: "What encoding is used?"

"UTF-8. Japanese and other non-ASCII text are supported."

Q: "Are comments preserved?"

"No. JSON has no comments, so comments are dropped in conversion."

Q: "Is my input sent to a server?"

"No. All processing happens in your browser."

Convert between YAML / JSON / TOML. Paste, format, and convert instantly.

No server upload (browser-only) Auto convert (switch to manual) Copy & download

Convertește Configurare How to Note Întrebări Frecvente Instrumente corelate

Convert (Input / Output)

Intrare

Input format Sample format

Wrap

# Paste YAML / JSON / TOML

Ieșire

Caracter de mască

Rezultatul poate fi copiat sau descărcat.

Converted output appears here...

Configurare

Auto convert

Update output as you type (turn OFF for huge files).

Indent (JSON/TOML)

2 spaces 4 spaces

Sort keys (JSON)

Helpful for diffs.

Watch YAML implicit types

Depending on spec/implementation, strings can become booleans or numbers.

Temporarily save input on this device

Restore on next visit. Turn OFF on shared PCs.

Output notes

Comments are not preserved (JSON has no comments).
YAML anchors/aliases may be lost during conversion.

How to: YAML JSON TOML Convert

1. Paste your text

Paste YAML/JSON/TOML into the input panel.

2. Choose formats

Select input (auto-detect is OK) and output formats.

3. Copy / Download

Copy the output or save it as a file.

yaml to json (YAML→JSON)

Paste YAML and set output format to JSON.

json to yaml (JSON→YAML)

Paste JSON and set output format to YAML.

json to toml (JSON→TOML)

Paste JSON and set output format to TOML.

Notes & tips

Browser-only processing

All conversion happens in this browser. No server upload.

Watch type coercion

YAML can coerce types implicitly. Quote values when in doubt.

UTF-8

UTF-8 is assumed. Non-ASCII text is supported.

Sfat

Enable key sorting to make JSON diffs easier to read.

Action-safe margin (%)

Can I keep YAML anchors / aliases?

They may be expanded because JSON/TOML have no equivalent. Verify the result if you rely on shared references.

Can types change (number vs string)?

Yes. YAML can implicitly interpret types. For example, "01" may become a number and yes/no/on/off can become booleans. Quote explicitly if needed.

What encoding is used?

UTF-8. Japanese and other non-ASCII text are supported.

Are comments preserved?

No. JSON has no comments, so comments are dropped in conversion.

Is my input sent to a server?

No. All processing happens in your browser.